/* Global Styles */
body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #ffffff;
    color: #333;
    font-size: 1em;
}

/* Header Styles */
header {
    background: #222;
    color: white;
    padding: 10px 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    position: relative;
}
/* Hamburger icon */
.hamburger {
    display: block;
    cursor: pointer;
    font-size: 24px;
    padding: 10px;
    color: white;
    background: none;
    border: none;
    position: absolute;
    right: 20px;
    top: 10px;
}

/* Navigation */
nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

nav button {
    background: transparent;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s, background-color 0.3s;
    border-radius: 20px;
}

nav button:hover, nav button:focus {
    background-color: #f0f0f0;
    color: #222;
}

/* Mobile Nav Toggle */
@media (max-width: 2000px) {
    nav {
        display: none;
        flex-direction: column;
        align-items: center;
        background-color: #333;
        padding: 10px 0;
    }

    nav.show {
        display: flex;
    }

    .hamburger {
        display: block;
    }
}

/* Container for layout */
.container {
    display: block;
    width: 80%;
    margin: auto;
    padding: 0 20px;
}

/* Styling for the title */
h1 {
    margin: 0;
    font-size: 1.5em;
}



/* Hero Section Customization */
.hero {
    background: linear-gradient(to right, #ffcc00, #ff6600);
    text-align: center;
    padding: 50px 0;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero h2 {
    margin-bottom: 10px;
    font-size: 2em;
}

.hero p {
    margin-bottom: 20px;
    font-size: 1.2em;
}

.hero button {
    padding: 10px 20px;
    border-radius: 20px;
    border: 2px solid white;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease-in-out;
    background: transparent;
    color: white;
}

.hero button:hover {
    background-color: white;
    color: #222;
}


/* About Section Styling */
.about-container {
    width: 100%;
    background: white;
    padding: 60px 10%;
    box-sizing: border-box;
}

.about-container h2 {
    text-align: center;
    font-size: 2.2em;
    font-weight: 600;
    margin-bottom: 20px;
}

.about-text {
    font-size: 1.1em;
    line-height: 1.8;
    text-align: justify;
    max-width: 1200px;
    margin: auto;
}

.bert-demo {
    margin-top: 60px;
    background: #fffaf0;
    padding: 40px 20px;
    border-radius: 12px;
   
}

.demo-title {
    text-align: center;
    font-size: 1.8em;
    color: #ff6600;
    margin-bottom: 20px;
}

.demo-description {
    text-align: justify;
    max-width: 1200px;
    margin: 0 auto 30px;
    font-size: 1.1em;
    line-height: 1.6;
}

.demo-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.demo-card {
    background: #ffffff;
    border: 1px solid #ddd;
    border-left: 6px solid #ff6600;
    border-radius: 10px;
    padding: 20px;
    max-width: 350px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.demo-card:hover {
    transform: translateY(-5px);
}

.demo-card h3 {
    margin-top: 0;
    font-size: 1.2em;
    color: #222;
}

.demo-card p {
    margin-bottom: 10px;
    font-size: 0.95em;
}

/* Color accents for different result types */
.correct {
    border-left-color: #ff6600;
}
.error {
    border-left-color: #ff6600;
}
.tuned {
    border-left-color: #ff6600;
}


/* Private Investigator Report Section */
.private-investigator-section {
    background-color: #f9f9f9;
    padding: 60px 0;
}

.private-investigator-section .container {
    width: 80%;
    margin: auto;
    text-align: center;
}

.private-investigator-section h2 {
    font-size: 2em;
    font-weight: 600;
    margin-bottom: 30px;
}

/* Flexbox Grid for Author Cards */
.authors {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px; /* Adds space between the cards */
}

/* Author Card Styling */
.author-card {
    background: white;
    width: 280px;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.author-card:hover {
    transform: translateY(-5px);
    box-shadow: 0px 6px 15px rgba(0, 0, 0, 0.15);
}

/* Author Image Styling */
.author-card img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin-bottom: 10px;
    object-fit: cover;
}

/* Author Name */
.author-card h3 {
    font-size: 1.2em;
    font-weight: 600;
    margin-bottom: 10px;
}

/* Author Description */
.author-card p {
    font-size: 0.9em;
    color: #666;
    line-height: 1.5;
}

.author-link {
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s;
}

.author-link:hover {
    transform: scale(1.03);
}



.diagrammer-section {
    background-color: #fffaf0;
    padding: 60px 0;
  }
  
  .diagram-intro {
    text-align: center;
    font-size: 1.1em;
    max-width: 1500px;
    margin: 0 auto 40px;
    line-height: 1.6;
    text-align: justify;
  }
  
  .diagram-steps {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
  }
  
  .diagram-card {
    background: #ffffff;
    border-left: 6px solid #ffcc00;
    padding: 20px;
    width: 300px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  }
  
  .diagram-card h3 {
    color: #ff6600;
    font-size: 1.2em;
    margin-bottom: 10px;
  }
  
  .diagram-card ul {
    padding-left: 18px;
  }
  
  .diagram-card li {
    font-size: 0.95em;
    line-height: 1.6;
  }
  
  .diagram-image {
    text-align: center;
    margin-top: 50px;
  }
  
  .diagram-image img {
    width: 90%;
    max-width: 1000px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  }

  .diagram-image2 img {
    width: 90%;
    max-width: 1500px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  }
  
  .caption {
    font-size: 0.9em;
    color: #555;
    margin-top: 10px;
  }
  
/* Future Research Section */
.future-research-section {
    background-color: #f9f9f9;
    padding: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 30px;
}

.flowchart-section {
    margin-top: 3rem;
    text-align: center;
  }
  .flowchart {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    margin: 1rem 0;
  }
  .node {
    background-color: #ffa500;
    border: 2px solid #ffcc00;
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
  }
  .node:hover {
    background-color: #ffcc00;
  }
  .link-container {
    display: none;
    background: #fce586;
    border: 1px dashed #000000;
    margin: 1rem auto;
    padding: 1rem;
    width: fit-content;
    text-align: left;
    border-radius: 8px;
    font-size: 1em;
  }
  .link-container a {
    display: block;
    margin: 0.3rem 0;
    color: #2a5db0;
    font-weight: 500;
    
  }

/* Research Text Below Yellow Box */
.research-text {
    font-size: 16px;
    line-height: 1.6;
    margin: 40px auto 0;
    text-align: justify;
    font-size: 1.2em;
    max-width: 1200px;
}

/* Responsive */
@media (max-width: 900px) {
    .future-research-wrapper {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .flowchart-wrapper, .video-container, .research-text {
        width: 90%;
    }
}


/* BERT Animation Section */
.bert-animation {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    background: #f4f4f4;
    border-radius: 10px;
    box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.1);
    width: 80%;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

/* Sentence Styling */
.sentence {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
}

/* Tokenized Words */
.tokenized {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.token {
    display: inline-block;
    padding: 10px 15px;
    background: #ffcc00;
    border-radius: 8px;
    font-weight: bold;
    opacity: 0;
    animation: fadeIn 1s ease-in-out forwards;
}

/* Attention Arrows */
.attention-arrows {
    display: flex;
    justify-content: center;
    gap: 20px;
    font-size: 24px;
    margin-bottom: 20px;
}

.arrow {
    opacity: 0;
    animation: fadeIn 1.5s ease-in-out forwards 1s;
}

/* BERT Output */
.bert-output {
    display: flex;
    justify-content: center;
    gap: 10px;
    font-size: 16px;
    font-weight: bold;
    color: #0077b6;
    opacity: 0;
    animation: fadeIn 2s ease-in-out forwards 2s;
}

.token, .arrow, .output {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.6s ease-in-out, transform 0.6s ease-in-out;
}

.fade-in {
    opacity: 1 !important;
    transform: translateY(0) !important;
}
/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .bert-animation {
        width: 100%;
    }
    
    .tokenized, .bert-output {
        flex-wrap: wrap;
    }
}

/* Authors, Content and Footer Styling */
/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
        align-items: center;
    }

    nav {
        width: 100%;
        justify-content: space-around;
        margin-top: 10px;
    }

    nav button {
        margin-left: 0;
    }

    .about-container {
        width: 90%;
        padding: 20px;
    }

    .about-content {
        font-size: 1em;
    }
}

.comparison-section {
    background: #fefefe;
    padding: 60px 20px;
  }
  
  .comparison-section .container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
  }
  
  .table-intro {
    font-size: 1.05em;
    margin-bottom: 30px;
    line-height: 1.7;
    color: #444;
  }
  
  .table-wrapper {
    overflow-x: auto;
  }
  
  .comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95em;
    background: white;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
  }
  
  .comparison-table th,
  .comparison-table td {
    border: 1px solid #ddd;
    padding: 12px 16px;
    text-align: center;
    vertical-align: middle;
  }
  
  .comparison-table th {
    background: #f1f5f9;
    font-weight: 600;
    font-size: 1em;
    color: #111;
  }
  
  .comparison-table tr:nth-child(even) {
    background: #fafafa;
  }
  
  .comparison-table td:first-child {
    font-weight: bold;
    background-color: #f9fafb;
    text-align: left;
  }
  
  .comparison-table td strong {
    color: #047857;
  }
  
  @media (max-width: 768px) {
    .comparison-table {
      font-size: 0.85em;
    }
  }
  

/* 🏺 Archaeologist Timeline Section */
.timeline-section {
    background: #fff;
    padding: 60px 0;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: auto;
    padding-left: 20px;
    border-left: 4px solid #ffcc00;
}

.timeline-step {
    position: relative;
    margin: 40px 0;
    
}

.timeline-step .content {
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
    background-color: #fff8e1;
    border-left: 4px solid #ffa500;
}

.timeline-step .content h3 {
    margin-top: 0;
    color: #222;
    font-weight: 600;
}

.timeline-step .content ul {
    margin: 10px 0 0 20px;
}

.timeline-step .content ul li {
    margin-bottom: 8px;
    font-size: 0.95em;
    line-height: 1.5;
}

.timeline-summary {
    margin-top: 60px;
    padding: 20px;
    background: #fff8e1;
    border-left: 4px solid #ffa500;
    border-radius: 8px;
}

.timeline-summary h3 {
    margin-top: 0;
    font-weight: 600;
    color: #222;
}

.reference-section {
    background-color: #fafafa;
    padding: 60px 0;
    border-top: 1px solid #eee;
  }
  
  .reference-section h2 {
    text-align: center;
    font-size: 2em;
    font-weight: 600;
    margin-bottom: 30px;
  }
  
  .ieee-list {
    font-size: 0.98em;
    line-height: 1.8;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 30px;
    text-align: justify;
  }
  
  .ieee-list li {
    margin-bottom: 15px;
  }
  
  .ieee-list a {
    color: #1d4ed8;
    text-decoration: none;
    font-weight: 500;
  }
  
  .ieee-list a:hover {
    text-decoration: underline;
  }
  


/* Footer Styling */
footer {
    background-color: #000;
    color: #ccc;
    padding: 30px 0;
    text-align: center;
    font-size: 0.95em;
    border-top: 1px solid #333;
}

footer h2 {
    color: #fff;
    margin-bottom: 10px;
    font-size: 1.5em;
}

footer p {
    margin: 5px 0;
    color: #aaa;
}